SE2 launched in Early Access on 27 January 2025 in Creative-only mode — dedicated server multiplayer is coming in 2026+. This guide covers Space Engineers 1 (SE1), which remains the active multiplayer game with dedicated server support. SE2 is being built on the new VRAGE3 engine with proper client-server architecture from the ground up — multiplayer in SE2 is expected to be far more stable than SE1 when it launches.
Space Engineers has been running dedicated server communities since 2013. Over a decade later, the challenge is still the same: getting SimSpeed to stay at 1.0 when your friends build 500-block mining ships, deploy programmable block scripts and run auto-turrets simultaneously. Most hosting guides recommend providers based on price alone, without explaining why Space Engineers is fundamentally different from other survival games — and why the wrong hardware kills SimSpeed for everyone regardless of what you pay. This guide explains what actually matters, then shows you which providers deliver it for UK players.
Space Engineers’ core simulation — grid physics, voxel deformation, collision detection, thruster calculations — runs on a single CPU thread. This means a 5.0GHz Ryzen 9 9950X will dramatically outperform a 2019 server CPU with 32 cores for SE hosting. Clock speed is everything.
SimSpeed of 1.0 = the game runs at 100% of its intended physics speed. Below 1.0, everything slows down — ships fly slower, mining takes longer, explosions are delayed. A SimSpeed of 0.5 means your server is running at half speed. Every player on the server experiences this equally.
PCU (Performance Cost Unit) measures the CPU cost of each block. A fighter ship costs ~3,000 PCU. An unconstrained mining station can hit 500,000+ PCU and collapse SimSpeed for everyone on the server. Block limits aren’t optional — they’re what keeps a community server running.
When two ships collide, dock or fight in Space Engineers, the results are calculated server-side and sent to clients. High latency means one player’s ship appears in a different position than another’s. A London UK node keeps British players under 20ms — Frankfurt adds 35–60ms of visual desync on top of SimSpeed calculations.
- Top 3 picks — UK nodes, GBP pricing
- All 18 providers compared
- SimSpeed explained — the most important server metric
- Hardware guide — RAM, CPU, storage by player count
- SpaceEngineers-Dedicated.cfg — key settings
- Torch Server — the community optimisation tool
- Best mods & performance tips
- World types — Star System vs Space-Only vs Planet
- Best host by use case
- Space Engineers 2 — what’s coming
- FAQ
Best Space Engineers server hosting UK 2026
Ranked on UK/London node, single-core CPU performance for SimSpeed, Torchserver support, mod management, and GBP value. DatHost does not offer Space Engineers — default top 3 shifts to LOW.MS / Host Havoc / GTX Gaming (official Keen Software partner).
LOW.MS
Gold Pick
🇬🇧 London UK
LOW.MS takes the top UK spot for Space Engineers on hardware grounds: the Ryzen 9 9950X’s high single-core clock is the single most impactful spec for Space Engineers SimSpeed, and it’s combined with a confirmed London UK node, DDR5 memory, NVMe storage and a genuine 5-day refund policy. For a physics-heavy sandbox game where SimSpeed directly determines playability — not just comfort — the CPU clock matters more than almost any other factor.
Full FTP access means you can deploy Torch Server plugins for concealment and auto-cleanup (the community-standard optimisation tools for Space Engineers), manage your SpaceEngineers-Dedicated.cfg and Sandbox_config.sbc files directly, and upload world saves from existing servers or local games. Cloud backups run automatically and independently of game updates — Space Engineers worlds can grow to multiple gigabytes after long playthroughs, making backup reliability critical.
- ✓ Ryzen 9 9950X — top single-core for SimSpeed
- ✓ London UK — sub-20ms for UK players
- ✓ Full FTP for Torch Server + cfg editing
- ✓ Cloud backups + auto-updates
- ✓ 5-day refund · 4.8★ Trustpilot
- ✓ from £7.41/mo — competitive UK price
- ✗ Fewer global locations than GTX or G-Portal
- ✗ No dedicated SE-specific knowledge base
Host Havoc
Silver Pick
🇬🇧 London
Host Havoc’s own physical hardware is especially relevant for Space Engineers: when multiple players trigger high-PCU events simultaneously (ship-to-ship collisions, large explosions, mining operations), the CPU load spikes hard. On shared cloud hosting, this triggers throttling from overcommitted resources. Host Havoc’s dedicated hardware doesn’t share CPU with other customers, maintaining SimSpeed under peak load.
Their per-slot pricing at $0.75 (£0.56/slot) scales well for larger communities — a 30-player server costs £16.68/mo, a 64-slot (maximum) server costs £35.57/mo. Full FTP access for Torch Server deployment and cfg editing. TCAdmin v2 panel with file manager. 4.8★ from 1,515+ Trustpilot reviews with sub-10-minute average support response. For Space Engineers specifically, fast support matters when a Torch plugin breaks after an update.
- ✓ Own hardware — no CPU throttling on sim spikes
- ✓ London UK node · up to 64 player slots
- ✓ Workshop browser integrated in panel
- ✓ Full FTP for Torch Server and config editing
- ✓ 4.8★ from 1,515 reviews · <10 min support
- ✓ NVMe SSD · auto-backups · DDoS protection
- ✗ 15-slot minimum — no cheaper small-group option
- ✗ 72h refund window
GTX Gaming
Bronze Pick
🇬🇧 London + Stockholm
Official Keen partner
GTX Gaming’s DDR5 5.7GHz single-core clock is excellent for SimSpeed — and as an official Keen partner, their control panel receives Space Engineers-specific updates alongside major game patches. This matters because Space Engineers’ configuration files and server behaviour change with updates, and generic panels often lag behind. Their panel sliders let you adjust RAM, CPU priority and disk space without migrating between plans.
At £1/slot with a 10-slot minimum (£10/mo), GTX Gaming is competitive for UK players and offers both London and Stockholm nodes for players in England and Scandinavia. Plans scale to 60 slots. Their SE panel specifically handles the Windows Server environment (Space Engineers server is 64-bit Windows only), automatic updates, and configuration templates. 7-day refund is the most generous in our top 3.
- ✓ Official Keen Software House partner
- ✓ DDR5 5.7GHz — excellent SimSpeed performance
- ✓ London + Stockholm UK nodes · 28 locations
- ✓ SE-specific panel maintained with game updates
- ✓ RAM/CPU/disk sliders · 10–60 slots
- ✓ 7-day refund · 4.7★ (1,386 reviews)
- ✗ £1/slot is slightly higher than Host Havoc’s £0.56
- ✗ Extra cost for Stockholm and some distant locations
All Space Engineers hosting providers compared
All prices GBP ($1=£0.741, €1=£0.865, April 2026). 🇬🇧 = confirmed UK/London node. SimSpeed rating = hardware suitability for SE physics. ⚠ = unconfirmed — verify before ordering.
| # | Provider | Est. GBP/mo | 🇬🇧 UK? | SimSpeed HW | Trustpilot | Notes | |
|---|---|---|---|---|---|---|---|
| 1 | LOW.MS | ~£7.41 | ✅ London | 🟢 Excellent | 4.8★ (193) | Ryzen 9 9950X · DDR5 · 5-day refund | Visit → |
| 2 | Host Havoc | £8.34+ | ✅ London | 🟢 Excellent | 4.8★ (1,515) | Own HW · $0.75/slot · up to 64 · Workshop panel | Visit → |
| 3 | GTX Gaming | £10+ | ✅ London + Stockholm | 🟢 Excellent | 4.7★ (1,386) | Official Keen partner · DDR5 5.7GHz · 7-day | Visit → |
| 4 |  GGServers | ~£4.45 | ✅ London | 🟡 Good | 4.6★ (3,407) | Budget UK · London node · FTP | Visit → |
| 5 |  Gaming Deluxe | ~£10 | ✅ London · GBP | 🟢 Excellent | 4.5★ (82) | UK company · GBP billing · Intel/AMD 5.0GHz+ · 7 days backup | Visit → |
| 6 |  BisectHosting | ~£8.89–13 | ✅ London | 🟡 Good | 4.8★ (25,348) | Flexible RAM · 21 locations · 24/7 chat | Visit → |
| 7 |  Apex Hosting | ~£11.12+ | ✅ London + global | 🟡 Good | 4.8★ (8,054) | Beginner-friendly · guided setup · 7-day refund | Visit → |
| 8 |  Shockbyte | ~£7.41+ | ✅ EU nodes | 🟡 Good | 3.8★ (10,176) | AMD EPYC · 100% uptime SLA · 72h refund | Visit → |
| 9 |  G-Portal | ~£3.71/3 days | ✅ Frankfurt DE | 🟡 Good | 4.0★ (2,836) | Pay-as-go · 3-day trial · mod manager | Visit → |
| 10 |  Survival Servers | ~£7.41–14.83 | ✅ EU nodes | 🟡 Good | 4.7★ (862) | $1/slot · instant location change · survival specialist | Visit → |
| 11 |  ScalaCube | ~£5.93 | ✅ UK + EU | 🟡 Good | 4.5★ (4,713) | Beginner-friendly · free subdomain · UK nodes | Visit → |
| 12 |  SparkedHost | ~£9.63 | ✅ EU nodes | 🟢 Excellent | 4.8★ (2,291) | Enterprise HW · 99.99% SLA · Apollo panel | Visit → |
| 13 |  Nitrado | ~£5–11 | ✅ EU nodes | 🟡 Good | 3.6★ (7,403) | Xbox crossplay · flexible pay-as-go | Visit → |
| 14 |  Indifferent Broccoli | ~£12.59 | ⚠ Germany EU | 🟢 Excellent | 4.4★ (792) | 128GB RAM pool · uncapped · 7-day refund | Visit → |
| 15 |  AleForge | £5.93 (8GB) | ⚠ US only | 🟢 Excellent | 4.9★ (139) | Ryzen 9 7950X · cheapest/GB · US only · 7-day | Visit → |
| 16 |  Hostinger | £7.03 | ✅ UK VPS | 🟡 Good | 4.7★ (66k+) | VPS · AMD EPYC · root access · manual setup | Visit → |
| 17 |  4NetPlayers | ~£4.50 | ✅ EU | 🟡 Good | 4.4★ (7,900) | Budget EU · affordable for small groups | Visit → |
| 18 |  GameServers.com | ~£5.93 | ✅ London | 🔴 Lower | 2.8★ (179) | London UK · older infrastructure · lower rating | Visit → |
🟢 = high-clock modern CPU ideal for SE SimSpeed. 🟡 = adequate hardware, verify specs. 🔴 = older hardware may struggle with complex builds. DatHost does not offer Space Engineers. Prices GBP, April 2026. SimSpeed rating = estimated hardware suitability, not a measured benchmark — verify with each provider.
SimSpeed explained — the most important server metric in Space Engineers
Every hosting guide talks about RAM and player slots. Almost none of them explain SimSpeed — the metric that actually determines whether Space Engineers is playable on your server. Understanding SimSpeed is understanding Space Engineers hosting.
SimSpeed (Simulation Speed) measures how fast the server is processing the game’s physics simulation relative to real time. A value of 1.0 = perfect — the simulation runs exactly as intended. Below 1.0, everything in the game world slows down proportionally. At SimSpeed 0.5, ships travel at half speed, mining takes twice as long, and explosions are delayed.
- High PCU builds (complex grids with many active blocks)
- Programmable block scripts running on tight timers
- Auto-mining scripts (each drill tick = a voxel update)
- Many active turrets scanning for targets simultaneously
- Rotors and pistons on large subgrid constructions
- Floating objects (debris, unclaimed ships)
- Multiple players warping simultaneously
Space Engineers’ physics simulation runs on a single CPU thread. This is a known engine limitation in SE1 (one of the things SE2/VRAGE3 is solving). You cannot improve SimSpeed by adding more cores — only by increasing single-core clock speed. A 5.0GHz Ryzen 9 processing 5 billion instructions per second will always outperform a 3.0GHz server CPU for SE, no matter how many cores the latter has.
- Ships travel at their designed maximum speed
- Collisions register immediately and accurately
- Scripts execute on schedule
- Mining produces resources at the correct rate
- Turrets track and fire at normal speed
- Players experience low input latency
- Ships visibly sluggish at full throttle
- Collision detection delayed — ships clip through
- Scripts stall or skip execution cycles
- Mining takes disproportionately long
- Turrets lag and miss targets that appear stationary
- Server crashes during large explosions
PCU — understanding the block cost system
PCU (Performance Cost Unit) is Keen Software’s system for quantifying the CPU cost of each block type. Every block in Space Engineers has a PCU value. The server has a configurable total PCU limit — when the world exceeds it, the server can reject new block placement. Here’s the scale:
Space Engineers server specs — by player count and world complexity
Keen’s own dedicated server specs are a starting point. The reality is that Space Engineers performance degrades over time as worlds grow — a server that runs perfectly on day one may struggle at day 30 with established bases and large fleets.
| Configuration | Keen Official Min | Practical Recommendation | Notes |
|---|---|---|---|
| 2–4 players · fresh world | 3.2GHz · 3 cores · 6GB | 4.5GHz · 8GB RAM · NVMe | Single-core clock is the priority |
| 5–8 players · established world | 4.5GHz · 3 cores · 10GB | 5.0GHz · 12GB RAM · NVMe | RAM grows with world complexity |
| 8–16 players · modded server | — | 5.0GHz+ · 16GB · NVMe · Torch | Torch plugins essential at this scale |
| 16–32 players · large community | — | 5.0GHz+ · 20–32GB · Concealment plugin | Active world cleanup required |
| Scripted server (PB-heavy) | — | 5.2GHz+ · high IPC · strict PB limits | Each PB update = CPU thread cycle |
SE’s simulation is single-threaded. 5.0GHz+ modern Ryzen is the ideal target. The Ryzen 9 9950X (LOW.MS) and DDR5 5.7GHz (GTX Gaming) both target this. Older 32-core Xeon servers at 3.0GHz are significantly worse for SE despite having more total cores.
Space Engineers saves can grow to multiple gigabytes after months of play. AutoSave every 5 minutes on a large world causes brief simulation pauses on SATA SSD. NVMe makes autosave imperceptible. Set AutoSaveInMinutes=5 in config for crash protection.
A fresh small world uses 6–8GB. After months of exploration, asteroid mining and base building, worlds regularly exceed 10GB of memory. Buy with headroom — 16GB is the practical minimum for any established community server.
The Space Engineers dedicated server binary runs on Windows 64-bit. Linux hosting uses Wine, which introduces SimSpeed penalties due to Windows API translation overhead. Most managed hosts handle this transparently — but for maximum performance, Windows Server hosting is preferable.
Required server ports
SpaceEngineers-Dedicated.cfg — key settings explained
Space Engineers uses two primary config files: SpaceEngineers-Dedicated.cfg (server-level settings) and Sandbox_config.sbc (world-level settings including block limits). Most managed hosts expose common settings through their control panel — but knowing what each does prevents costly mistakes.
The most important settings for SimSpeed management. Set to “Admins” or “All” and configure a PCU cap per player and per faction. Without this, one player with 500,000 PCU will degrade performance for everyone.
Programmable blocks (PBs) running C# scripts consume CPU every time they execute. On a casual server, disable them. On a technical server, require approval before allowing scripts and enforce execution interval limits.
When ships explode or miners leave debris, the floating objects become physics entities the server tracks. Setting this to 64 (default) or lower forces old debris to despawn, freeing simulation budget for actual gameplay.
5 minutes is the recommended balance — short enough that a crash loses minimal progress, long enough that the save operation doesn’t cause noticeable pauses. On NVMe storage, saves are faster; on SATA, increase to 10.
Torch Server — the essential Space Engineers optimisation framework
Torch Server is an open-source server wrapper developed by the Space Engineers community. It replaces the vanilla dedicated server executable with a performance-enhanced version and adds a plugin system for server management. On any active community server, Torch is essentially required.
Shows real-time SimSpeed, tracks which grids and scripts are consuming the most simulation budget, and identifies the specific players or constructions causing SimSpeed drops. Essential for diagnosing performance problems on a live server.
Automatically removes grids from physics simulation when no players are nearby — “concealing” them without deleting. When a player approaches, the grid reappears seamlessly. This single plugin can double effective SimSpeed on servers with large established builds spread across the map.
Periodically deletes floating debris, unclaimed grids and abandoned spacecraft. Also removes grids belonging to players who haven’t logged in for a configurable number of days. Prevents the gradual PCU accumulation that degrades server performance over months.
Admin chat commands for grid deletion, player teleportation, PCU inspection, ban management and server configuration changes without restarting. Works via Torch’s chat command system.
Best mods for Space Engineers servers + performance tips
Space Engineers has thousands of Steam Workshop mods. For servers, the safest are content mods (new blocks, ships, textures) — they add assets without scripting overhead. Script-heavy mods (economy systems, advanced AI, complex automation) add to the same single-thread budget that determines SimSpeed.
Adds NPC ship encounters, pirates and space creatures. Requires configuration tuning for servers — limit spawn rates and encounter complexity. Popular for PvE servers. CPU impact depends heavily on encounter frequency settings.
Client-side UI mods that improve the building interface. Server-side impact is minimal since they run on each client. One of the most universally installed mods on any server — virtually no performance cost.
Adds atmospheric physics to ships — lift, drag, stall. Popular on planet-focused servers. Has per-grid script overhead but is generally well-optimised. Test SimSpeed impact on a small server before deploying to production.
Economy systems (market boards, currency tracking, player shops) often run persistent scripts checking inventory states. These compete directly for SimSpeed budget. Test carefully, limit script frequency, and monitor SimSpeed after installing.
Server admin performance tips
Ships using scripts and autopilot to mine continuously cause constant voxel updates — one of the primary sources of SimSpeed drops. Set a drill limit per ship and prohibit autopilot mining scripts on community servers.
Each turret scanning for targets generates a raycast every simulation tick. A station with 30 turrets constantly hunting = 30 raycasts per tick. Set rules: max 6–8 defensive turrets per faction base, 4 per ship.
SE servers accumulate floating objects and simulation overhead over long sessions. A daily restart at 4–6am clears this. Use Torch’s scheduled restart plugin to automate this with a 5-minute warning to players.
Require script approval from admins before PBs go live. Set a minimum execution interval (e.g. every 3 seconds minimum). Use the Profiler to identify which scripts are consuming the most CPU budget per tick.
Star System vs Space-Only vs Planet — which world for your server?
Space Engineers offers meaningfully different world configurations. The choice significantly affects performance, gameplay style and how demanding the server is on hardware.
The full Space Engineers experience — the Earth-like planet, the Moon, Mars, Alien planet, Titan and Europa, plus asteroid belts and space between them. Players can travel between all bodies. Most content available. Most demanding — planets add voxel terrain updates and atmosphere simulation. Best for established communities on quality hardware (8GB+ RAM, 5GHz+ CPU).
Asteroids only — no planets, no atmosphere simulation. The lowest-demand world type. SimSpeed is significantly more stable because the server isn’t tracking planetary terrain deformation. Survival and Creative modes both work. Recommended for smaller servers or budget hardware. Great for pure ship-building communities.
One planet (commonly Earth-like) with its Moon, plus nearby asteroids — but no other planetary bodies. The middle ground: players get planetary survival gameplay without the full Star System complexity. More manageable SimSpeed than full Star System. Popular for survival-focused groups. Allows terrestrial base building with space expansion.
Best UK Space Engineers host for your situation
Ryzen 9 9950X + DDR5 + London UK + 5-day refund. The highest single-core clock available for SE hosting on our list — translating directly to better SimSpeed under load. From ~£7.41/mo.
Own hardware + sub-10 min support + London UK + 4.8★ from 1,515 reviews. Best when a Torch plugin breaks after a game update or a rogue script tanks SimSpeed at 2am.
Official Keen Software partner · DDR5 5.7GHz · London + Stockholm · SE-specific panel updated with game patches. Best for players who want a host with proven Keen collaboration.
~£4.45/mo · London UK · FTP access · NVMe. Best entry-level UK option for a small 2–4 player friend group on a space-only or fresh world where SimSpeed demands are lower.
UK-based company · GBP billing · London node · Intel/AMD 5.0GHz+ CPUs · 7 days backup history included. Best for UK groups wanting a British company with GBP invoicing.
Guided setup, clear documentation, London node, 7-day refund, 4.8★ from 8,054 reviews. Best for first-time server owners who prioritise hand-holding over raw hardware specs.
3-day free trial available for Space Engineers. ~£3.71/3 days pay-as-go. Frankfurt EU node. Good for testing before committing to a monthly provider. Note: 4.0★ Trustpilot.
Economy mods, PB scripts and large builds need the highest single-core clock and no CPU throttling. Both provide own/bare-metal hardware with top-tier CPUs. Deploy Torch Server with Profiler to monitor and manage SimSpeed.
Space Engineers 2 — what server owners need to know
Space Engineers 2 is Keen Software House’s ground-up sequel, launched in Early Access on 27 January 2025. It’s built on the VRAGE3 engine — a complete rewrite that addresses SE1’s biggest technical limitations, including the single-threaded physics bottleneck that caps SimSpeed.
- VRAGE3 engine — properly multi-threaded physics
- True client-server architecture (not P2P)
- Real-time destruction with fracture physics
- Next-gen visuals: ray tracing, global illumination
- Large and small grid integration (no more connector fights)
- Story-driven campaign alongside sandbox
- The Almagest star system — new setting
- Early Access — Creative mode and Survival (VS2.2)
- No multiplayer/dedicated servers yet
- Multiplayer confirmed for 2026+ (no fixed date)
- ~74% positive reviews from 2,776 total (74% Mostly Positive)
- SE1 remains the active multiplayer game
- SE1 continues to receive bug fixes during SE2 EA
- 3-year EA window expected per Keen’s roadmap
For server owners, the VRAGE3 multi-threaded physics engine is the crucial change. SE1’s SimSpeed limitation is a direct consequence of single-threaded physics — SE2’s architecture distributes simulation across multiple CPU cores, meaning server hardware requirements and scaling characteristics will be fundamentally different. What this means in practice: when SE2 multiplayer launches, you’ll likely want providers with high core counts alongside high clock speed, rather than just prioritising clock speed alone as you do today in SE1.
